Thread: Re: [Plplot-devel] The wxwidgets version you use for MSVC

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Hi Arjen
That looks like the class you are looking for. Those comments
shouldn't be important. They just mean that you can access x and y
exactly like in a C struct, for example wxSize mySize; mySize.x=4;.
But the comment says please don't do this.

Further down in that class is there a constructor? it will look
something like wxSize( int w, int h). It looks like a function
declaration, but with no return type. The variable names may be
different too - probably some variation on width and height or x and
y.

On 10 July 2017 at 10:25, Arjen Markus <Arj...@de...> wrote:
> Hi Phil,
>
>
>
> That is definitely a possibility. I had another search for wxSize. At first
> I only found wxSizer (which is not the class I was looking for), but finally
> I did – in a header file “gdicmn.h”:
>
>
>
> class WXDLLIMPEXP_CORE wxSize
>
> {
>
> public:
>
>     // members are public for compatibility, don't use them directly.
>
>     int x, y;
>
>
>
> I have no idea what to make of the comment …
>
>
>
> Regards,
>
>
>
> Arjen
>
>
>
>
>
> From: p.d...@gm... [mailto:p.d...@gm...]
> Sent: Monday, July 10, 2017 10:59 AM
> To: Arjen Markus; Alan W. Irwin
>
>
> Subject: RE: The wxwidgets version you use for MSVC
>
>
>
> Hmm, I wonder if wxUSE_STRING_POS_CACHE is set during the wxWidgets build of
> the dlls, but then not during the build of plplot. That would explain a
> linker error there i think.
>
>
>
> You could search for wxSize::wxSize which should locate the constructors for
> that class, if they exist.
>
>
>
> Phil
>
>
>
> Sent from my Windows 10 phone
>
>
>
> From: Arjen Markus
> Sent: 10 July 2017 08:22
> To: p.d...@gm...; Alan W. Irwin
> Subject: RE: The wxwidgets version you use for MSVC
>
>
>
> Hi Phil,
>
>
>
> See my answers below in context.
>
>
>
> Regards,
>
>
>
> Arjen
>
>
>
>
>
> From: p.d...@gm... [mailto:p.d...@gm...]
> Sent: Monday, July 10, 2017 12:24 AM
> To: Alan W. Irwin
> Cc: Arjen Markus
> Subject: RE: The wxwidgets version you use for MSVC
>
>
>
> Hi Arjen
>
> Have you built any other wxWidgets applications with this library version.
> Also is there a chance that you could be accessing headers from a version
> that s different to the dll?
>
>
>
>>>AM: I have not tried to build anything else. I had a “hello, world”
>>> example, but I compiled that under MinGW and as that worked and the PLplot
>>> build failed, I do not think it is representative for the current problem.
>
>
>
> Usually when I see wxString involved my first guess s a Unicode related flag
> miss match. But with those two particular methods being unrelated and
> probably relatively small functions, I wondered if they have been swapped
> from inline to not inline between wx versions, and hence if you pick up a
> header without inlined versions but a dll with inlined versions you will get
> linker errors. Just a guess though.
>
> Also try using dependency walker or dumpbin (fed into grep if you have
> access to it) to check if those methods or some variants are really in the
> dll.
>
>
>
>>>AM: The libraries and header files come from the “official” wxWidgets
>>> site. But they are the DLLs only, not the static ones. I searched for the
>>> string “wxString” in the header files and the libraries (import and DLL),
>>> but it is ubiquitous – 904 header files contain that string. Luckily that
>>> was not the case for ~wxString. That is defined in the string.h header file,
>>> but conditionally:
>
>
>
> #if wxUSE_STRING_POS_CACHE
>
>   ~wxString()
>
>   {
>
>       // we need to invalidate our cache entry as another string could be
>
>       // recreated at the same address (unlikely, but still possible, with
> the
>
>       // heap-allocated strings but perfectly common with stack-allocated
> ones)
>
>       InvalidateCache();
>
>   }
>
> #endif // wxUSE_STRING_POS_CACHE
>
>
>
> No such luck though with wxSize – 504 header files.
>
>
>
> I have not yet inspected the 34 DLLs … that is for later.
>
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Thread: Re: [Plplot-devel] The wxwidgets version you use for MSVC

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